2015 Playmate of the Year Dani Mathers, seen at the Playboy Mansion in a May 14, 2015 file photo, has pleaded not guilty to a misdemeanor count of invasion of privacy in connection with a photo of a naked woman in a gym locker room that appeared on her Shapchat account in July.

A Playboy model who allegedly took a photo of a nude 70-year-old woman in the shower of a Playa Vista gym locker room and posted it on social media with a derogatory comment pleaded not guilty Monday through her attorney to a misdemeanor count of invasion of privacy.

Dani Mathers, the 29-year-old 2015 Playboy Playmate of the Year, came under a firestorm of criticism after the photo appeared on her Snapchat account in July. The picture showed the naked woman from behind, with Mathers’ head turned away from the camera, with the message, “If I can’t unsee this then you can’t either.”

Mathers did not appear in court on the misdemeanor charge. A pretrial hearing was set for Dec. 21, which she also is not required to attend.

Outside the courtroom, defense attorney Tom Mesereau said his client was sorry.

“She very much regrets what happened,” Mesereau told reporters. “She apologized for her behavior and we’re looking forward to resolving this case in a very fair manner.”

Mathers, who was later banned from L.A. Fitness gyms, could face six months in jail and up to a $1,000 fine if convicted, according to the City Attorney’s Office.

“While body shaming, in itself, is not a crime, there are circumstances in which invading one’s privacy to accomplish it can be. And we shouldn’t tolerate that,” City Attorney Mike Feuer said when charges were filed.”

Shortly after the photo was posted, Mathers apologized, writing on her Twitter account: “I’m sorry for what I did. I need to take some time to myself now to reflect on why I did this horrible thing.”

In another post, she wrote, “This was a huge mistake and I’m so sorry. I understand that this was wrong and I will do everything in my power to show you.” In another, she indicated that she did not mean to post the photo publicly, only send it to a friend.